Search Results - "Koike, Takehiro"

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    Realization of Negative Thermal Expansion in Lead-Free Bi0.5K0.5VO3 by the Suppression of Tetragonality by Pan, Zhao, Koike, Takehiro, Nishikubo, Takumi, Hu, Lei, Liu, Qiumin, Sakai, Yuki, Kawaguchi, Shogo, Azuma, Masaki

    Published in Inorganic chemistry (28-02-2022)
    “…Bi1/2K1/2VO3 is a lead-free PbTiO3-type compound with a tetragonality (c/a = 1.054) comparable to that of typical ferroelectric PbTiO3 (c/a = 1.064) with…”
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    Journal Article
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    Pressure-Induced YbFe2O4-Type to Spinel Structural Change of InGaMgO4 by Koike, Takehiro, Das, Hena, Oka, Kengo, Kusano, Yoshihiro, Cubillas, Fernando, Francisco Brown Bojorqez, Alvarez-Montano, Victor Emmanuel, Ito, Shigekazu, Shigematsu, Kei, Togano, Hayato, Yamada, Ikuya, Ishibashi, Hiroki, Kubota, Yoshiki, Mori, Shigeo, Kimizuka, Noboru, Azuma, Masaki

    Published in Solids (01-09-2024)
    “…Spinel-type InGaMgO4 with a = 8.56615(3) Å was prepared by treating layered YbFe2O4-type InGaMgO4 at 6 GPa and 1473 K. DFT calculation and Rietveld analysis of…”
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    Journal Article
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    Realization of Negative Thermal Expansion in Lead-Free Bi 0.5 K 0.5 VO 3 by the Suppression of Tetragonality by Pan, Zhao, Koike, Takehiro, Nishikubo, Takumi, Hu, Lei, Liu, Qiumin, Sakai, Yuki, Kawaguchi, Shogo, Azuma, Masaki

    Published in Inorganic chemistry (28-02-2022)
    “…Bi K VO is a lead-free PbTiO -type compound with a tetragonality ( / = 1.054) comparable to that of typical ferroelectric PbTiO ( / = 1.064) with negative…”
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    Journal Article
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    Pressure Induced Amorphization of Pb2+ and Pb4+ in Perovskite PbFeO3 by Liu, Qiumin, Das, Hena, Nishikubo, Takumi, Sakai, Yuki, Mibu, Ko, Onoue, Tomoko, Kawakami, Takateru, Watanuki, Tetsu, Machida, Akihiko, Ye, Xubin, Dai, Jianhong, Pan, Zhao, Hu, Lei, Nakano, Satoshi, Fukuda, Masayuki, Kihara, Shiori, Lee, Koomok, Koike, Takehiro, Long, Youwen, Azuma, Masaki

    Published in Chemistry of materials (27-02-2024)
    “…Perovskite-type oxides have been the subject of intense research due to their various fascinating physical properties stemming from their charge degree of…”
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    Bi0.5Pb0.5FeO3 with Unusual Pb Charge Disproportionation: Indication of a Systematic Charge Distribution Change in Bi0.5Pb0.5 MO3 (M: 3d Transition Metal) by Kihara, Shiori, Sakai, Yuki, Wakazaki, Shogo, Nishikubo, Takumi, Koike, Takehiro, Mibu, Ko, Yu, Hongwu, Okimoto, Yoichi, Koshihara, Shin-ya, Azuma, Masaki

    Published in Inorganic chemistry (15-08-2022)
    “…Bi0.5Pb0.5FeO3 with 1:1 mixture of Bi and Pb having charge degrees of freedom at the A-site of perovskite oxide ABO3 is obtained for the first time by…”
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    Sequential Pressure-Induced B 1- B 2 Transitions in the Anion-Ordered Oxyhydride Ba 2 YHO 3 by Morgan, Harry W T, Yamamoto, Takafumi, Nishikubo, Takumi, Ohmi, Takuya, Koike, Takehiro, Sakai, Yuki, Azuma, Masaki, Ishii, Hirofumi, Kobayashi, Genki, McGrady, John E

    Published in Inorganic chemistry (09-05-2022)
    “…We present a detailed experimental and computational investigation of the influence of pressure on the mixed-anion oxyhydride phase Ba YHO , which has recently…”
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    Sequential Pressure-Induced B1-B2 Transitions in the Anion-Ordered Oxyhydride Ba2YHO3 by Morgan, Harry W T, Yamamoto, Takafumi, Nishikubo, Takumi, Ohmi, Takuya, Koike, Takehiro, Sakai, Yuki, Azuma, Masaki, Ishii, Hirofumi, Kobayashi, Genki, McGrady, John E

    Published in Inorganic chemistry (09-05-2022)
    “…We present a detailed experimental and computational investigation of the influence of pressure on the mixed-anion oxyhydride phase Ba 2 YHO 3 , which has…”
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    Journal Article
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